Revolving chimney-cap.



Patented lime 17, I902.

A. E. & F. 1000K REVOLVING CHIMNEY CAP.

Sheet I.

Application filed. May 25, 1901.

2 Sheets- (no Model.)

I1: F 5 x.

EYS

FreWz'mZ $650k WITNESSES No. 702.779. Patented lune l7, I902.

A. E. a F. J. 000K.

REVOLVING CHIMNEY GAP.

. (Application fllgd May 25, 1901.) mun model.

WITNESSES I IN VEN TOR A-TTO s n woams Firms co, PMOTOLYYBO WASHINGTON u. c

UNITED STATES ANNA E. cooK AND FREDERICK .I. COOK, or LAWRENCEBURG, INDIANA.

' PATENT QFF'I'CE'.

REVOLVING CHIMNEY-CAP.

SPECIFICATION forming part of Letters'Patent N 0. 702,779, dated June 17, 1902.

Application filed May 25, 1901. Serial No. 61,862. (No model.)

.To alt whom it may concern:

Be it known that we, ANNA ELIZA COOK' and FREDERICK JOHN COOK, citizens of Lawrenceburg, in the county of Dearborn and State of Indiana, have invented anew and Improved Revolving Chimney-Gap, of which the following is a full, clear, and exact scription. I

The purpose of the invention is to provide a revolving chimney-cap whichis a substitute for high smoke-stacks and which will" prevent the wind from .blowingthe'smokeback into the chimney, as the improved cap turns with the wind and insures a perfect draft.

The invention consists in the novel construction and combination of the several dicate corresponding parts in all the figures.

Figure 1 is a vertical section through the improved chimney-cap, and Fig. lis a planview of the improved chimney c api Fig. 2 is a vertical section through a slight'n'nodifi cation of the base of the device adapted to be attached directly to the chimney.

A represents a smoke-stack, and B a head for the stack. This head consists of a central hub 10, having a threaded bore extending through, preferably, from the top to the bottom, and series of arms 11, which extend from the hub. A peripheral plate 12 connects the said arms, which peripheral plate extends below the arms and is recessed upon its outer face at its bottom portion to receive the upper end of the stack A, and the peripheral plate 12 of the head B is secured to the stack A through the medium of bolts or rivets 13 or their equivalents.

A vertical shaft 14 is used in connection with the head B. This shaft is screwed at its lower end into the hub 10 of the said head B, as is shown in Fig-.--1',thelower end of the shaft having to'that end anexterior thread 15.

is provided with a reduced surface 16, for a purpose'tolbe hereinafter described, and the upper end 17 of the shaft 14 is conical, as is also shown in Fig. 1. The conical or pointed Slightly above the head B the shaft 14 upper end 17 of the shaft 14 is made to enter a conical recess 18, formed in the under face of a cap-screw 19, the upper end of which cap-screw is made polygonal inorder that it may be turned by a wrench when desired, and the head-section of the cap-screw 19extends beyond its sides, the cap-screw being exteriorlythreaded below its head to be screwed into the'upper end of a tube 20,

the lower end of which tube 20 is exteriorly looselyplaced, entered into. the said chamber in any suitable or approved manner, and these balls havebearing against the reduced surface 'ld of -the said shaft 14, as is also The upper revoluble portion of the improved cap'is made in two sections, preferably a cast section 24, which is curved from the *bottom'upward and in'ward',"as shown- 1n Fig.

'1,'the -lower edge'ofthe said section 24 of the revoluble portion ofthe cap being free to turn and this'fiange 25 has anopening for receiv ing the body of the cap screw 19 and is clamped in the space between the head of the cap-screw 19 and the upper end of the tube 20, as is also shown in Fig. 1. The upper revoluble portion of the cap is completed by the addition of a sheet-iron or light metallic section 24, which is curved reversely to the curvature of the section 24, and the section 24 is attached to the section 24 through the medium of vertical flanges 24", forming a portion of the section 24, and bolts or rivets 24, passed through the said vertical flanges of the aforesaid section 24 of therevoluble portion of the cap, as is also shown in Fig.1. Thus it will be observed that the upper portion of secured to the bearing 21, as is shown in Fig. 1, and by means of the weight 27 the upper section may be delicately balanced upon the shaft 14, so that the least draft of air will act upon the upper section of the cap and will turn the same around the head B.

In Fig. 2 we have illustrated the adaptation of the device directly to a chimney O, and under this construction the head B is connected directly with a throat 28, which has a flange 28 at its bottom, adapted to rest upon the upper face of the chimney. The said throat 28 is provided with series of apertures 29, the apertures beinglocated one above the other, and wires 30 are passed through these apertures and are twisted together at their outer ends, the said wires extending down into the chimney and over nails or spikes 31 or their equivalents, which are driven into the mortar between the most convenient courses in the construction of the chimney.

Having thus described our invention, we claim as new and desire to secure by Letters Patent- 1. In a chimney-cap, the combination, with a lower head-section having openings therein and adapted for attachment to a stack or to a chimney, and a vertical shaft secured to said head-section, the upper end of which shaft is pointed, of an upper section open at the top and mounted to revolve upon the said pointed portion of the shaft and around the lower head-section, the upper section being in two connected members inclined in the same direction at opposite sides of the vertical axes of the cap from the head-section upward and having more or less convexed outer faces, ball-bearings provided for the upper sections of the cap, the balls whereof engage with the said shaft, a screw within the upper section, extending from the said ball-bearings, and a weight adjustable upon the said screw, for the purpose set forth.

2. In a chimney-cap, the combination, with a lower head-section otspider formation, having means for attachment to a chimney or to a stack, a shaft secured to the said head-section at its lower end, the upper end of the shaft being conical, a cap-screw mounted upon the conical end of the shaft, and a tube detachably connected to the cap-screw at its upper end, of a ball-bearing located around the lower portion of the shaft, the balls whereof engage with the shaft, the said tube supporting the said bearing, a screw extended from said bearing, a weight adjustable upon the screw, and an upper revoluble portion for the cap attached to the said cap-screw, and free to turn at its lower end around the lower head-section of the cap, as set forth.

3. In a chimney-cap, the combination, with a lower head-section of spider formation, having means for attachment to a chimney or to a stack, a shaft secured to the said head-section at its lower end, the upper end of the shaft being conical, a cap screw mounted upon the conical end of the shaft, and a tube detachably attached to the cap-screw at its upper end, of a ball-bearing located around the lower portion of the shaft, the balls whereof engage with the shaft, said tube supporting the said bearing, a screw extended from said bearing, a weight adjustable upon the screw, an upper revoluble portion for the cap attached to said cap-screw, and free to turn at its lower end around the lower head-section of the cap, the said upper portion of the cap consisting of a casing which is directly attached to the cap-screw and a member of lighter material secured to the casing, the entire revoluble section having a slope from the bottom upward in direction of one side of the lower basesection, as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

ANNA E. COOK. FREDERICK J. COOK.

\Vitnesses:

HENRY J. BUEsE, NOAH S. GIVAN. 

